Court documents indicate Noel Hagman has in her possession a Raj necklace and matching earring seat with encrusted diamonds and emeralds, a jewelry set that once belonged to Larry Hagman's mother, actress Mary Martin.
Noel Hagman said someone in the family gave her the jewelry, though no one in the family has acknowledged doing so, TMZ reported Friday.
The estate said it wants the jewelry back, or Noel Hagman should pay double its value. The value of the items were not reported.
The "Dallas" actor died Nov. 23 at age 81 after a battle with cancer.